JPH0558951B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a _B0 - _B0 - _B0 type three-bogie locomotive structure for railways, and in particular, to an improvement of the intermediate bogie among the three bogies. Concerning locomotive structure.

[Technical background of the invention and its problems]

Around the world, many large locomotives with six axles are manufactured and used. In this case, the C ₀ - _{C 0} type, which uses two 3-axle bogies in the front and rear, is often used in foreign countries, but it has the problem that the wheel lateral pressure is large when passing through curves and branching sections. Therefore,
In Japan, the _B0 - _B0 - _B0 type three-bogie locomotive, which uses three two-axle bogies and is suitable for winding routes due to the complexity of the terrain, has been used for a long time.

In addition, the car body structure of the above locomotives includes a center sill type in which a strength member is provided in the longitudinal direction at the center of the lower part of the car body, and a side sill type in which strength members are placed on the left and right side beams in the lower part of the car body. It is selected as appropriate depending on the design conditions of the vehicle.

By the way, in the case of a side sill type locomotive, it is necessary to apply as much of the load of the car body as possible from the left and right side beams of the car body to the bogie, and to transmit the traction force between the car body and the bogie between the left and right side beams of the car body and the bogie. . In such cases, there are many structures in which the traction force transmission links are directly connected to the left and right side beams between the car body and the bogies at both front and rear ends, so that the car body load is received by _{the left} and right sides of the _bogie . The intermediate bogie of a _B0 type 3-bogie locomotive generally has to allow a lateral movement of about 100 to 180 mm, and while allowing this lateral movement, the transmission of car body load and traction force is carried out as described above. It was quite difficult to create a structure in which the left and right side beams of the truck and the bogie were used. In other words, generally the car body width is not very large compared to the bogie width, and the bogie width is 100 to 180 mm.
If a large lateral movement occurs, the bogie frame will reach close to the side of the vehicle body, making it impossible to provide a fixed connection structure to the vehicle body or the bogie.

Therefore, the present applicant previously proposed a three-bogie locomotive structure that solved this problem in Japanese Patent Application No. 58-39547. The structure of the three-bogie locomotive is shown in Figures 1 to 3.
To explain it simply with a diagram, the underframe of the vehicle body is composed of left and right side beams 1 made of strength members extending in the front and rear direction, and cross beams 2 spanning between them. This configuration makes it difficult to receive large loads. In this way, the intermediate bogie 3 has overhanging portions 3c protruding from the left and right side beams 3b of the bogie frame 3a with respect to the vehicle body, and the left and right overhanging portions 3c
A pillow spring mechanism 4 is provided between the left and right side beams 1 of the vehicle body, so that the vehicle body load is received by the bogie frame 3a of the bogie 3. The pillow spring mechanism 4 is arranged between a pillow spring 5 provided on the upper surface of the overhang 3c via a rubber plate or the like, a roller receiver 6 on the upper side of the pillow spring 5, and a roller rolling receiver 7 fixed to the lower surface of the vehicle body side beam 1. With the configuration consisting of the provided lateral movement rollers 8, etc., the intermediate bogie 3 can freely move laterally to the left and right while receiving the load of the car body, and the three bogies can move along a curved road with almost no lateral movement of the front and rear bogies (not shown). It becomes possible to pass through.

Next, in the traction force transmission mechanism between the car body and the intermediate bogie 3, in the case of a _B0 - _B0 - _B0 type three-bogie locomotive, the front and rear bogies are used as axle load prevention bogies, and the intermediate bogie is used as a As a center dish type bogie, the intermediate bogie actively generates axle load movement within the bogie when transmitting traction force.
Since it is a good idea to reduce the axle load transfer between the front and rear bogies as much as possible, it is preferable that the intermediate bogie be provided with a traction force transmission mechanism having a traction force application point at a constant height on the rail surface. For this purpose, a center plate 9 is provided protruding from the center lower part of the middle beam 3d of the bogie frame 3a of the intermediate truck 3, and a traction beam 11 is provided by rotatably fitting a center plate hole 10 into the center plate 9. The base end is pivotally connected to the left and right ends of the traction beam 11 by a pin 12, and a pair of left and right traction links 13 in the form of triangular legs extend in the front and rear direction, while links are respectively attached to the lower surface of the left and right side beams 1 of the vehicle body. A pair of left and right inclined links 16 are provided, the upper ends of which are attached so as to be swingable in the left-right direction via a receiver 14 and a pin 15, and which are inclined in a V-shape with respect to each other.
The left and right traction link 1 is connected to the pin 17 at the lower end of 6.
The tips of No. 3 are pivotally connected. The connection point between the core plate 9 and the center plate hole 10 of the traction beam 11 is set as the traction force transmission point height, and the traction beam 11 is connected to the center plate 11 via the left and right traction links 13 and the left and right pairs of front and rear inclined links 16. Traction force is now transmitted between the car body and the bogie 3, and relative vertical movement between the car body and the bogie 3 is controlled by pin 1 of the left and right traction links 13.
2 and 17, and horizontal lateral movement of the bogie 3 is allowed by swinging of the inclined links 16 arranged in a V-shape on the left and right sides with respect to the car body side beams 1. The movement is the core plate 9 and the traction beam 1
1, all necessary movements of the intermediate carriage 3 are possible.

The left and right inclined links 16 and the left and right traction links 13 are disposed at diagonal (point symmetrical) positions around the core plate as shown in FIG.
It is also possible to arrange them in alignment on the front or rear side of 1.

With such a three-bogie locomotive structure, the intermediate bogie 3 can receive the load of the car body at the left and right side beams while allowing lateral movement between it and the car body, and can also transmit the traction force well. However, in the case of the three-bogie locomotive structure with the above-mentioned configuration, the traction force transmission mechanism of the intermediate bogie 3 is provided by the traction force transmission mechanism of the bogie frame 3a. Nakabei 3 in the center
d, traction beam 11 with core plate 9 and core plate hole 100;
As a result, there is insufficient space in the bogie frame 3a of the intermediate bogie 3 to install the main motor (not shown), and the nose receiving portion of the main motor is recessed in the center of the bogie frame 3a. It became impossible to eliminate the protruding disadvantage, and it was necessary to increase the distance between the front and rear axles, which caused the problem of increasing the size of the truck 3.

[Purpose of the invention]

This invention was made in view of the above circumstances, and allows the intermediate bogie to receive the car body load at the left and right side beams while suitably allowing lateral movement between the intermediate bogie and the car body, as well as to provide traction force between the car body and the bogie. To ensure a large space by recessing the central part of a bogie frame so that good transmission can be carried out and a main electric motor can be comfortably mounted without increasing the size of the bogie frame and increasing the distance between the front and rear axles. The purpose of the present invention is to provide a high-performance and practically simple three-bogie locomotive structure that enables the following.

[Summary of the invention]

The three-car locomotive structure of the present invention includes a pillow spring mechanism that allows relative lateral displacement between the car body and the bogie between the left and right side beams of the lower part of the car body and the left and right side beams of the bogie frame of the intermediate bogie, and A pair of front and rear left and right tilt links are provided that hang downward from the left and right side beams of the lower part of the vehicle body in a state that they can swing in the left and right directions, and that tilt to each other in a V-shape. In a B ₀ -B ₀ -B ₀ type three-bogie locomotive structure in which a pair of left and right traction links are provided extending from the lower part of the bogie frame of an intermediate bogie, the base ends of the left and right traction links pivotally connect the left and right traction links. The lower part of the intermediate bogie frame is not supported by a traction beam that slides into the core plate protruding from the lower part of the bogie frame of the intermediate bogie, as in the previous application, but instead of supporting the lower part of the intermediate bogie frame without providing such a core plate or traction beam. The left and right parallel links are pivotally connected to the tips of a pair of left and right parallel links arranged in the frame, and the middle part and the base end of each of the left and right parallel links are rotatably pivoted to the left and right lower portions of the middle beam of the bogie frame of the intermediate bogie. It is supported by being supported by triangular links that are supported and connected to each other by interlocking links, and parallel holding links that are rotatably supported at a distance from the front and back of the triangular links, Without impairing the lateral motion and tractive force transmission functions of the earlier application mentioned above, the center beam of the bogie frame where the main electric motor is mounted has only one simple interlocking link passing under it. This makes it possible to secure a large space by recessing the intermediate carriage low, thereby preventing the intermediate carriage from becoming large.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 4 to 6. Components in the figure that have the same configuration as those in FIGS. 1 to 3 are given the same reference numerals to simplify the explanation. Here, 3A in the figure is an intermediate truck, and its truck frame 3Aa is basically the same as that of the earlier application mentioned above, but the central beam 3 of the truck is
Since Ad does not have a center plate at the bottom, it is greatly recessed so that the center part is lower.

Middle beam 3Ad of the intermediate truck 3A's truck frame 3Aa
A pair of bearing seats 18, 19 are attached to the left and right parts of the lower surface, spaced apart from each other in the front and back direction, and a shaft 20,
Bell crank shaped triangular link 2 on each 20
1 and 21 are rotatably attached, and parallel holding links 23 and 23 are rotatably attached to shafts 22 and 22 that hang down from the left and right rear bearing seats 19 and 19, respectively. Furthermore, the left and right triangular links 21,
21 are connected at one end to each other by an interlocking link 25 via pins 24, 24, and the interlocking link 25 is connected to the bogie underframe 3.
It is selected to be located approximately midway in the longitudinal direction of Aa from left to right. These left and right triangular links 2
1 and the distal end of the parallel holding link 23 via pins 26 and 27 to pivotally connect the middle part in the longitudinal direction and the proximal end, thereby forming a pair of left and right parallel links 2.
8 and 28 are respectively disposed and supported in the lower left and right positions of the bogie frame 3Aa in parallel in the front-rear direction. At the tips of the left and right parallel links 28, 28, that is, when viewed from the front of the truck, the right parallel link 28 is attached to its forward extending end, and the left parallel link 28 is attached to its rear extending end. The base end portions of a pair of left and right traction links 13, 13 similar to those in the application are pivotally connected by pins 12, 12, and the respective traction links 13, 13 are connected by pins 12, 12.
The distal end portions thereof are pivotally connected by pins 17 to the lower end portions of a pair of front and rear V-shaped inclined links 16, 16 hanging from the left and right side beams 1 of the vehicle body.

The operation of the above-mentioned configuration will now be described. This type of intermediate bogie 3A moves up and down relative to the car body,
It is required to have five degrees of freedom: rolling, pitching, and swivel motion, and is rigidly restrained in the front and rear directions for traction force transmission, and the height of the point of application of traction force transmission prevents axle weight shift between the front and rear bogies. In order to achieve this, it is necessary to specify a certain height from the rail surface. These degrees of freedom and the traction function will be explained below. For convenience of explanation, the description will be made assuming that the vehicle body is immobile and only the cart moves.

First, when the intermediate truck 3A moves up and down, the left and right parallel links 28, 28 are supported by the triangular link 21 and the parallel holding link 23, respectively, with respect to the truck frame 3Aa, and therefore do not have any degree of freedom in the vertical direction. The left and right parallel link 28 ends and the left and right inclined link 16, which has a front and rear V shape and hangs down from the vehicle body side,
16, the left and right traction links 13 interposed between the lower end;
13 is tilted to allow the vertical movement. Further, in the case of rolling motion, the left and right traction links 13, 13 tilt to allow the rolling motion. At this time, either one of the left and right traction links 13, 13 tilts in the opposite direction to the above-described simple vertical movement. Further, during pitching motion, the left and right traction links 13, 13 tilt to permit the pitching motion, similar to the rolling motion described above.

Next, regarding left and right lateral movements, as mentioned above, the degree of freedom of the left and right parallel links 28, 28 in the left and right directions with respect to the bogie frame 3Aa is substantially restricted by the triangular link 21 and the parallel holding link 23, respectively, and their left and right parallel For the links 28, 28, the left and right traction links 13,
13 in the left-right direction, the V-shaped inclined links 16, 16, which are in a pair of front and rear suspensions hanging from the left and right side beams 1 of the car body, swing in the left-right direction to follow the bogie side. This horizontal lateral movement is allowed.

Further, when the truck makes a swivel motion, for example, when the truck rotates clockwise when viewed from above, the left and right traction links 13, 13 receive compressive force, respectively, and this supports the left and right parallel links 28, 28. The left and right triangular links 21, 21 and the parallel holding links 23, 23 interlock left and right links 25 counterclockwise around their respective shafts 20, 22.
The left and right parallel links rotate while interlocking through the
8 and 28 are moved together to allow clockwise swivel rotation of the trolley. When rotating in the opposite direction, a tensile force is applied instead of the compressive force, causing the left and right parallel links 28, 28 to move in the opposite direction to allow the counterclockwise swivel movement.

Next, when receiving a force in the longitudinal direction due to traction force transmission between the vehicle body and the bogie, the left and right traction links 13,
One of the parallel links 28 connected to the traction link 13 receiving the compression force rotates its triangular link 21 and parallel holding link 23 counterclockwise. The other parallel link 28, which is connected to the traction link 13 which is trying to rotate in the rotational direction and receives a tensile force, tries to rotate its triangular link 21 and the parallel holding link 23 in the clockwise direction. However, since the interlocking link 25 that connects the left and right triangular links 21 and 21 receives compressive force and prevents mutual rotation of the two, the left and right parallel links 28 and 2
8 does not change, and as a result, the bogie 3a can rigidly transmit the traction force to the vehicle body. Furthermore, since the left and right parallel links 28, 28 are aligned in the longitudinal direction of the bogie frame 3Aa to maintain parallelism, buckling of the traction link system can also be prevented.

With this configuration, the intermediate bogie 3A can receive the car body load at the left and right side beams while suitably allowing lateral movement between the intermediate bogie 3A and the car body, and can also improve the transmission of traction force between the car body and the bogie. In addition, only one simple interlocking link 25 is needed as a member placed horizontally near the center of the bogie underframe 3Aa, and the middle beam 3Ad of the bogie underframe 3Aa can be placed in the center of the bogie frame 3Aa without taking up space below it. It is possible to make a large recess to lower the height, making it convenient for installing main motors, etc.
This eliminates the inconvenience of increasing the size of the truck by widening the distance between the front and rear axes.

Note that the present invention is not limited to the above-mentioned embodiment. For example, in FIG.
may be provided on the lower side of the bogie frame and arranged diagonally with respect to the center line of the bogie. In addition, each parallel link 28 on the left and right
The triangular link 21 and the parallel holding link 23 that support it do not have to be complete parallelograms. Various other changes may be made without departing from the gist of the invention.

〔Effect of the invention〕

Since this invention has been made as described above, the intermediate bogie can receive the car body load at the left and right side beams while suitably allowing lateral movement between the intermediate bogie and the car body, and can also reduce the transmission of traction force between the car body and the bogie. Moreover, it is possible to secure a large space by recessing the center of the bogie frame so that the main electric motor can be conveniently mounted without increasing the size of the bogie frame and increasing the distance between the front and rear wheels. This makes it possible to provide a high-performance and practically simple three-bogie locomotive structure.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of the intermediate bogie of the previously proposed three-bogie locomotive shown as a conventional example, Fig. 2 is a side view of the intermediate bogie of the conventional example, and Fig. 3 is a side view of the intermediate bogie of the conventional example. 4 to 6, which are perspective views of the traction force transmission mechanism, show an embodiment of the present invention. FIG. 4 is a perspective view of the traction force transmission mechanism of the intermediate bogie of a three-bogie locomotive, and The figure is a cross-sectional view of the intermediate truck, and FIG. 6 is a side view of the intermediate truck. 1...Car body underframe side beam, 2...Car body underframe side beam,
3, 3A...Intermediate truck, 3a, 3a...Bolly frame, 3b...Bolly frame side beam, 3c...Overhanging portion,
3d, 3Ad... middle beam, 4... pillow spring mechanism, 5...
...Pillow spring, 6...Roller receiver, 7...Roller rolling receiver, 8...Roller for lateral movement, 9... Core plate, 10...
... Core plate hole, 11... Traction beam, 12, 15, 17...
... Pin, 13 ... Traction link, 14 ... Link receiver, 16 ... Inclined link, 18, 19 ... Bearing seat, 20, 22 ... Shaft, 21 ... Triangular link, 2
3... Parallel holding link, 24, 26, 27... Pin, 25... Interlocking link, 28... Parallel link.

Claims (1)

[Claims] 1. A pillow spring mechanism is provided between the left and right side beams of the lower part of the car body and the left and right side beams of the bogie frame of the intermediate bogie to allow relative lateral displacement between the car body and the bogie, and a pillow spring mechanism is provided between the left and right side beams of the lower part of the car body, and A pair of front and rear left and right inclined links are provided that hang downward in a slidable state and are inclined to each other in a V-shape, and a pair of left and right traction links whose tips are pivotally connected to the lower ends of the front and rear pairs of left and right inclined links. In a _B0 - _B0 - _B0 type three-bogie locomotive structure in which links are provided extending from the lower part of the bogie frame of the intermediate bogie, the base ends of the left and right traction links are pivoted to the tips of the pair of left and right parallel links. At the same time, the left and right parallel links are rotatably supported at the intermediate portions and the base end portions of the middle portions of the intermediate truck frame on the left and right lower portions of the middle beams of the intermediate truck, and are connected to each other by interlocking links. A three-bogie type locomotive structure characterized in that it is supported by being supported by a triangular link and parallel holding links that are rotatably supported at a distance in front and rear of the triangular link.